<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
    <title>JSP - Hello World</title>
</head>
<body>
<h1><%= "Hello World!" %>
${sessionScope.user}${sessionScope.clear()}${sessionScope.user}
</h1>
<h2><%="session: "+session.getAttribute("user")%></h2>
<h3>${sessionScope.user}</h3>
<h3>${user}</h3>
<h3>${loginInfo}</h3>
<br/>
<div>${tip}</div>
</body>
</html>